@longsleep Thanks for identifying this. This seems to be a long standing issue and you are right, unlikely to be resolved at any time soon. Back to the drawing board for me to use a libc based system. I was so close!
Im sending the invites with PHPMailer v5.2.6:
$mail = new PHPMailer();
$mail->Ical = $ICS;
This is working fine for invites but i need to find a way to get the Meeting into the organizers callendar. This is also possible with this method but kopano doesnt recognize him as the organizer which is needed in order to notify atendees whenever he changes something about the appointment.
I also tried importing the appointment thought the Ical/Caldav service but that didnt work either.
I don’t think it has to be “virtualisation” OR “containerisation”, but can work hand in hand. But I agree that getting into containerisation takes some effort and may not be worth while in all environments (especially when throwing Kubernetes into the mix)
Generally speaking if you need a certain set if plugins I would rather recommend to build an own container with these. Installing packages at runtime seemed like a nice hack to not overload the image with too many plugins, but this is has not really been a good approach otherwise.
It’s not that it has been rescheduled multiple times, it actually is part of the Kopano releases since 8.5.0, but it has constantly been improved over the recent releases and for 8.6 (currently available from pre-final) now also has packaging.
Feedback is always welcome. The more feedback there is, the faster we can move forward with releases.